Publication date Usually cited as published 1868, but Claparède did not introduce the name as a higher rank (as 'Lopadorhynchides' a tribe of the phyllodocids (not a family)) until 1870 in "Les Annelides Chetopodes du Golfe de Naples. Supplement". [details]

Spelling Hartman catalogue correctly used Lopadorrhynchidae, but many authors, perhaps a majority, have followed Claparède's initial Lopadorhynchides spelling as in Claparède, 1870, and used Lopadorhynchidae and Lopadorhynchus. Just as an example one such is the ABRS 'Polychaetes and allies' text (Beesley et al. 2000). Strictly the double 'r' -rrhynchus spelling is required as the genus is Lopadorrhynchus, regardless of subsequent misspellings [details]